During World War I, scientists were trying to develop an antidote to the poisonous yellow cloud known as mustard gas. They discovered the gas was irrevocably damaging the bone marrow of affected soldiers. This gave the scientists an...

This video provides an introduction to cancer, explaining what it is, the different types of tumors (benign and malignant), and the risk factors associated with it. The video uses simple animations to visualize the differences between...